Left: The east limit of County Road 800S after the full depth reclamation and hot mix asphalt paving project shows a smooth finished surface for Steuben County’s motorists. Potholes and cracks are a thing of the past now that a stable base is covered by Superpave. Above: Mark Cox, the regional manager for The Klink Group reported that the existing surface of CR 800S had patches, potholes, deep ruts, drainage issues and edge failures, which one can see in this before picture. Opposite Page: The API Construction crew sprayed a tack coat atop the base course before placing 1.5 inches of surface course. They used the Blaw-Knox PF 3172 to place a Superpave mix with 25 percent RAP. Density averaged 92.6 percent for the 9.5-mm surface mix.
surface course was an INDOT Type B 9.5-mm Superpave mix placed at 1.5 inches. It also used the PG64-22 binder, but incorporated 25 percent RAP. To get a smooth surface, Johnson credits HMA Field Superintendent Kary Benson and Scott Fenstermaker from API’s testing department for working closely together to keep the project flowing. “Between these two individuals and their communication and cooperation, we were able to produce a consistent quality mix that not only achieved very good test results, but also performed well on the lay-down end without segregation, tearing, stripping, etcetera that can oftentimes occur. We also achieved production rates that were expected.” The crew ran the plant at an average of approximately 160 tons per hour (TPH). The paving crew used a Blaw-Knox PF 3172 paver with a material management kit and a ski modified with a mat-reference system to place 17,344 tons along nine lane miles in 10 32 december 2012